[nocoolname]

Also when performing the test with and without, I would be interested in the density altitude at the time.

 

[dev]

Also when performing the test with and without, I would be interested in the density altitude at the time.

It would simply have to be back to back with a cool down in between. It also has to be out of the statistical error of the dyno.

 

[Russell55]

It would simply have to be back to back with a cool down in between. It also has to be out of the statistical error of the dyno.

I do have an OBD II reader and I, too would be interested in the back to back readings with and without the mod taken while driving the car. The problem is that to get this mod in or out I have to disconnect the battery. That means I have to drive it long enough to reset the ECU. Chances are that the temp, air pressure, etc. wont be the same for each reading.

And I think Dev is correct that a dyno won't show any significant change in performance with or without the mod. But , and please correct me if I'm wrong, dyno tests aren't done while the vehicle is moving. So in order to tell if there might be an effect the dyno test would have to be done in an air tunnel simulating driving speed. Can they do that?

Maybe I can rig up some looong battery cables that allow me to move the battery enough to remove the air tube without disconnecting the power. Then I might be able to do a back to back reading under the same conditions.

Ah! Science can be fun.